27 year old lobular carcinoma

My cancer was also lobular and because if the size of the tumour I had to have a right side mastectomy (chose to have a bilateral mastectomy). Had 17 lymph nodes removed and one showed cancerous cells.  I did not have chemo as was told this type of cancer does not respond well to chemo. Had 5 weeks of radiation then medication.  Early problems with cording but physio provided exercises to help.  Was reassured with the treatment decisions as this was made by a large team and not just one doctor.  Be informed, ask questions but take it step by step.  I too during the early days found it difficult to be positive, waiting for all test results etc. Once I knew the course of treatment I was in a much better state of mind.  I am a lot older than you and it sucks that anyone has to go through this let alone young ladies.